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WO2004072483A1 - Pompe a volute et procede d'assemblage associe - Google Patents

Pompe a volute et procede d'assemblage associe Download PDF

Info

Publication number
WO2004072483A1
WO2004072483A1 PCT/GB2004/000497 GB2004000497W WO2004072483A1 WO 2004072483 A1 WO2004072483 A1 WO 2004072483A1 GB 2004000497 W GB2004000497 W GB 2004000497W WO 2004072483 A1 WO2004072483 A1 WO 2004072483A1
Authority
WO
WIPO (PCT)
Prior art keywords
scroll
orbiting scroll
bearing means
pump
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2004/000497
Other languages
English (en)
Inventor
Stephen James Dovey
Alan John Saunders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOC Group Ltd filed Critical BOC Group Ltd
Priority to EP04710066A priority Critical patent/EP1595078B1/fr
Priority to DE602004032108T priority patent/DE602004032108D1/de
Priority to US10/544,866 priority patent/US7442016B2/en
Priority to AT04710066T priority patent/ATE504742T1/de
Publication of WO2004072483A1 publication Critical patent/WO2004072483A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods

Definitions

  • the present invention relates to a scroll pump and to a method of assembling a scroll pump.
  • a prior art scroll pump 100 is shown in Figure 3, and comprises a housing 102, a drive shaft 103 having a concentric shaft portion 104 and an eccentric shaft portion 106.
  • the shaft is supported at its concentric portion by bearing means 108, which is fixed relative to housing 102, and is driven by a motor 110 which is mounted in the housing.
  • a second bearing means is shown in Figure 3, and comprises a housing 102, a drive shaft 103 having a concentric shaft portion 104 and an eccentric shaft portion 106.
  • the shaft is supported at its concentric portion by bearing means 108, which is fixed relative to housing 102, and is driven by a motor 110 which is mounted in the housing.
  • a second bearing means is shown in Figure 3, and comprises a housing 102, a drive shaft 103 having a concentric shaft portion 104 and an eccentric shaft portion 106.
  • the shaft is supported at its concentric portion by bearing means 108, which is fixed relative to housing 102, and is driven by a motor 110 which is mounted in the housing.
  • the 112 supports an orbiting scroll 114 on the eccentric shaft portion 106 so that during use rotation of said shaft imparts an orbiting motion to said orbiting scroll 114 which co-operates with a second, fixed, scroll 116 for pumping fluid along a fluid flow path 117 between an inlet and outlet of the pump.
  • the radial clearances between the orbiting and fixed scrolls are accurately controlled so that lubricant is generally not required for sealing.
  • the axial clearances between the scrolls are sealed with tip seals 118.
  • the arrangement means that a scroll pump may be used when it is desired to maintain a dry environment for the pumping media along the fluid flow path.
  • a bellows arrangement 120 isolates the first bearing means and the second bearing means from the fluid flow path, thereby restricting contamination of the pumping media, since the bearing means are generally lubricated.
  • O-ring seals 121 and 122 are disposed between the bellows arrangement and orbiting scroll 114 and housing 102, respectively, to resist the passage of contaminants.
  • the bellows arrangement is sufficiently flexible to allow orbiting motion of the orbiting scroll 114, second bearing means 112 and eccentric shaft portion 106.
  • a counter- weight 123 is provided for balancing the weight of the orbiting components of the pump. The counter-weight is adapted to be fitted about the concentric shaft portion 104 of the drive shaft 103 radially between a flexible portion of the bellows arrangement 120 and the drive shaft 103.
  • shaft 103, bearing means 108 and motor 110 are mounted relative to the housing 102.
  • Counter-weight 123 is fitted onto the drive shaft 103 and fastened with a radially extending fastener or pin 125.
  • Second bearing means 112 is then fixed to a hub 124 of orbiting scroll 114 with fasteners 126 (only one is shown).
  • a flange 128 of the bellows arrangement is then fixed to the orbiting scroll with fasteners 129 (only one is shown).
  • the orbiting scroll 114, second bearing means 112 and bellows arrangement 120 are then inserted together into the housing in the direction shown by arrow A.
  • This assembly step involves passing the flexible portion of the bellows arrangement over the counter-weight, which is relatively awkward to achieve.
  • flange 130 of bellows arrangement 120 is fastened to the housing by fasteners 132 (only one is shown). The fastening of fastener 132 is a difficult procedure since access to the fastener is
  • the present invention provides a method of assembling a scroll pump
  • the scroll pump comprising: a housing; a drive shaft having an eccentric shaft portion; first bearing means for supporting said drive shaft for rotation; second
  • bearing means for supporting an orbiting scroll on said eccentric shaft portion so that during use rotation of said shaft imparts an orbiting motion to said
  • the second bearing means is preferably fastened relative to said
  • the orbiting scroll is preferably fastened to said second flange portion
  • the present invention thus also provides a method of assembling a scroll pump, the scroll pump comprising: a housing; a drive shaft having an
  • second bearing means for supporting an orbiting scroll on said eccentric shaft portion so that during use rotation of said shaft imparts an
  • the orbiting scroll being preferably fastened to said second flange portion of said bellows arrangement with at least one fastener which is inserted through a bore in said orbiting scroll.
  • the at least one fastener is preferably inserted through the bore so as to be substantially flush with a surface of said orbiting scroll.
  • a counter-weight for said orbiting scroll is fastened to said drive shaft with an axially extending fastener.
  • the step of fastening said counter-weight to said drive shaft may take place subsequently to the step of fastening the first flange portion of the bellows arrangement relative to the housing.
  • the present invention also provides a scroll pump comprising: a housing; a drive shaft having an eccentric shaft portion; first bearing means supporting said drive shaft for rotation; second bearing means supporting an orbiting scroll on said eccentric shaft portion so that during use rotation of said shaft imparts an orbiting motion to said orbiting scroll which co-operates with a second scroll for pumping fluid along a fluid flow path between an inlet and outlet of the pump; and a bellows arrangement isolating said first bearing means and said second bearing means from said fluid flow path; wherein said bellows arrangement has a first flange portion fastened relative ' to said housing and a second flange portion fastened to said orbiting scroll with at least one fastener which extends through a through-bore in the orbiting scroll and engages with said second flange portion.
  • Figure 1 is a cross-section of a scroll pump
  • Figure 2 is an enlarged view of part of the scroll pump shown in
  • Figure 3 is a cross-section of the prior art scroll pump described above.
  • a scroll pump 10 which comprises a housing 12, a drive shaft 14 having a concentric shaft portion 16 and an eccentric shaft portion 18.
  • the shaft is supported at its concentric portion by first bearing means 20 and is driven by a motor 22, both the first bearing means and the motor being mounted in said housing 12.
  • the first bearing means comprises two rolling bearings that are spaced apart.
  • a second bearing means 24 supports an orbiting scroll 26 on said eccentric shaft portion
  • the second bearing means 24 comprises two rolling bearings as shown. The radial clearances between the orbiting and fixed scrolls are accurately controlled so that lubricant is generally not required for sealing.
  • the axial clearances between the scrolls are sealed with tip seals 32.
  • the arrangement allows a scroll pump to be used when it is desired to maintain a dry environment for the pumping media along the fluid flow path 30.
  • a bellows arrangement 34 isolates the first bearing means 20 and the second bearing means 24 from the fluid flow path 30, which restricts contamination of the pumping media since the bearing means are generally lubricated.
  • O- ring seals 36 and 38 are disposed between the bellows arrangement and orbiting scroll 26 and housing 12, respectively, to resist the passage of contaminants.
  • the bellows arrangement 34 further serves to provide relative rotational location of the orbiting scroll 26 with respect to the second scroll 28.
  • the bellows arrangement limits undesirable travel in the circular translation of the orbiting scroll 26 and thus maintains the correct angular position between the second scroll 28 and the orbiting scroll 26.
  • the bellows arrangement may be formed from any suitable material, such as metallic or plastics material, having a sufficient torsional stiffness so as to maintain the correct angular position between the scrolls, whilst having sufficiently flexible to allow orbiting motion of the orbiting scroll 26, second bearing means 24 and eccentric shaft portion 18.
  • a counter-weight 40 for the orbiting scroll 26 is fixed to the drive shaft 14 so as to be adjacent to the orbiting scroll and generally axially aligned with the second bearing means 24.
  • the relatively small distance between the counter-weight 40 and the orbiting scroll 26 allows the counter-weight to be reduced in mass as compared with the prior art, since the distance from the dynamic counterbalance mounted on the motor rotor 22 is increased. Therefore, the total weight of the pump 10 is reduced.
  • first bearing means 20 and motor 22 are mounted relative to the housing 12.
  • Motor 22 may however be mounted at any suitable stage in the assembly process. As shown, the first bearing means
  • the bellows arrangement 34 is itself relatively flexible and the free end (ie the end thereof to the right in the drawing) can-be moved to one side to allow easy access for fastening fastener 50 with a tool.
  • the counter-weight 40 comprises a shaped arm 54 having a free end which is fitted about and fastened to drive shaft 14 with an axially extending fastener.
  • the shaped arm 54 which extends axially and radially, permits the counter-weight to be positioned adjacent the orbiting scroll 26.
  • a second " flange, or flange portion, 56 of the bellows arrangement defines an annular recess for accommodating counter-weight 40 so that the counter-weight is positioned axially between the bellows arrangement 34 and the orbiting scroll
  • the second bearing means 24 is fastened to orbiting scroll 26 with
  • O-ring 36 is fitted in an accommodating annular recess in the orbiting
  • Figure 2 shows an enlarged view of the orbiting scroll and the second flange.
  • the section shown in Figure 2 is angularly displaced from the section
  • FIG. 1 shows fastener 60 in greater detail.
  • at least one fastener 60 extends through a through-bore 61 in the orbiting scroll
  • Fastener 60 consists of a screw in Figures 1 and
  • the orbiting scroll 26 has a counter-sunk
  • the inlet to the scrolls is at
  • the through-bore and fastener 60 is formed at a radially outer portion of the fluid flow path where pressure is relatively less
  • fastener 60 is positioned at a surface of the orbiting scroll defining the
  • receiving the fastener is not required.
  • the fixed scroll is then located in position and fastened relative to

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un procédé d'assemblage de pompe à volute qui comprend les étapes suivantes effectuées de manière séquentielle : une étape consistant à monter un premier moyen palier (20) et un arbre d'entraînement (14) destiné à tourner dans un logement (12); une étape consistant à attacher une première partie bordure (48) d'un agencement de type soufflet (34) dans le logement (12); une étape consistant à attacher une volute tournante (26) à une deuxième partie bordure (56) de l'agencement en soufflet (34); et une étape consistant à fixer une deuxième volute (28) dans le logement (12) destinée à coopérer avec la volute tournante (26). La deuxième partie bordure (56) est attachée à la volute tournante (26) au moyen d'éléments d'attache qui s'étendent à travers un alésage traversant (61) dans la volute tournante et qui entrent en contact avec la deuxième partie bordure.
PCT/GB2004/000497 2003-02-17 2004-02-11 Pompe a volute et procede d'assemblage associe Ceased WO2004072483A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04710066A EP1595078B1 (fr) 2003-02-17 2004-02-11 Pompe a volute et procede d'assemblage associe
DE602004032108T DE602004032108D1 (de) 2003-02-17 2004-02-11 Spiralpumpe und montageverfahren dafür
US10/544,866 US7442016B2 (en) 2003-02-17 2004-02-11 Scroll pump and method of assembling same
AT04710066T ATE504742T1 (de) 2003-02-17 2004-02-11 Spiralpumpe und montageverfahren dafür

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0303591.2A GB0303591D0 (en) 2003-02-17 2003-02-17 A scroll pump and method assembling same
GB0303591.2 2003-02-17

Publications (1)

Publication Number Publication Date
WO2004072483A1 true WO2004072483A1 (fr) 2004-08-26

Family

ID=9953150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/000497 Ceased WO2004072483A1 (fr) 2003-02-17 2004-02-11 Pompe a volute et procede d'assemblage associe

Country Status (7)

Country Link
US (1) US7442016B2 (fr)
EP (1) EP1595078B1 (fr)
AT (1) ATE504742T1 (fr)
DE (1) DE602004032108D1 (fr)
GB (1) GB0303591D0 (fr)
TW (1) TWI333026B (fr)
WO (1) WO2004072483A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8267677B2 (en) 2005-10-03 2012-09-18 Flowrox Oy Gasket part for a pump
GB2514639A (en) * 2013-03-13 2014-12-03 Agilent Technologies Inc Scroll pump having bellows providing angular synchronization and back-up system for bellows
US9097252B2 (en) 2010-04-28 2015-08-04 Edwards Limited Scroll pump including drive shaft extending through fixed scroll
US9328730B2 (en) 2013-04-05 2016-05-03 Agilent Technologies, Inc. Angular synchronization of stationary and orbiting plate scroll blades in a scroll pump using a metallic bellows
US9366255B2 (en) 2013-12-02 2016-06-14 Agilent Technologies, Inc. Scroll vacuum pump having external axial adjustment mechanism
WO2016127470A1 (fr) * 2015-02-09 2016-08-18 温岭市红宝石真空设备厂（普通合伙） Pompe à vortex

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0600588D0 (en) * 2006-01-12 2006-02-22 Boc Group Plc Scroll-type apparatus
US8622724B2 (en) * 2009-09-25 2014-01-07 Agilent Technologies, Inc. Scroll pump with isolation barrier
US10208753B2 (en) 2013-03-29 2019-02-19 Agilent Technologies, Inc. Thermal/noise management in a scroll pump
US9611852B2 (en) 2013-03-29 2017-04-04 Agilent Technology, Inc. Thermal/noise management in a scroll pump
US8961160B2 (en) 2013-03-29 2015-02-24 Agilent Technologies, Inc. Scroll pump having separable orbiting plate scroll and method of replacing tip seal
US9360013B2 (en) 2013-12-11 2016-06-07 Agilent Technologies, Inc. Scroll pump having axially compliant spring element
US9429020B2 (en) 2013-12-11 2016-08-30 Agilent Technologies, Inc. Scroll pump having axially compliant spring element
CN109268265A (zh) * 2018-10-18 2019-01-25 东北大学 一种涡旋真空泵
CN109441802A (zh) * 2018-10-18 2019-03-08 东北大学 一种干式真空泵工作系统、吸污工作系统及吸料工作系统
US12098642B2 (en) 2019-04-30 2024-09-24 Agilent Technologies, Inc. Double sided oil film thrust bearing in a scroll pump
GB2595283B (en) * 2020-05-21 2022-11-02 Edwards Ltd Scroll pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59192884A (ja) * 1983-04-15 1984-11-01 Hitachi Ltd スクロ−ル流体機械
JPH02112690A (ja) * 1988-10-20 1990-04-25 Tokico Ltd スクロール式流体機械
EP1055824A1 (fr) * 1999-05-26 2000-11-29 The BOC Group plc Appareil à spirales

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5123364A (en) 1989-11-08 1992-06-23 American Combustion, Inc. Method and apparatus for co-processing hazardous wastes
GB9608061D0 (en) 1996-04-16 1996-06-19 Boc Group Plc Removal of noxious substances from gas streams
TW342436B (en) 1996-08-14 1998-10-11 Nippon Oxygen Co Ltd Combustion type harm removal apparatus (1)
GB0304285D0 (en) * 2003-02-25 2003-04-02 Boc Group Plc Scroll compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59192884A (ja) * 1983-04-15 1984-11-01 Hitachi Ltd スクロ−ル流体機械
JPH02112690A (ja) * 1988-10-20 1990-04-25 Tokico Ltd スクロール式流体機械
EP1055824A1 (fr) * 1999-05-26 2000-11-29 The BOC Group plc Appareil à spirales

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 057 (M - 363) 13 March 1985 (1985-03-13) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 331 (M - 0999) 17 July 1990 (1990-07-17) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8267677B2 (en) 2005-10-03 2012-09-18 Flowrox Oy Gasket part for a pump
US9097252B2 (en) 2010-04-28 2015-08-04 Edwards Limited Scroll pump including drive shaft extending through fixed scroll
GB2514639A (en) * 2013-03-13 2014-12-03 Agilent Technologies Inc Scroll pump having bellows providing angular synchronization and back-up system for bellows
US9404491B2 (en) 2013-03-13 2016-08-02 Agilent Technologies, Inc. Scroll pump having bellows providing angular synchronization and back-up system for bellows
GB2514639B (en) * 2013-03-13 2020-02-19 Agilent Technologies Inc Scroll pump having bellows providing angular synchronization and back-up system for bellows
US9328730B2 (en) 2013-04-05 2016-05-03 Agilent Technologies, Inc. Angular synchronization of stationary and orbiting plate scroll blades in a scroll pump using a metallic bellows
US10294939B2 (en) 2013-04-05 2019-05-21 Agilent Technologies, Inc. Angular synchronization of stationary and orbiting plate scroll blades in a scroll pump using a metallic bellows
US9366255B2 (en) 2013-12-02 2016-06-14 Agilent Technologies, Inc. Scroll vacuum pump having external axial adjustment mechanism
WO2016127470A1 (fr) * 2015-02-09 2016-08-18 温岭市红宝石真空设备厂（普通合伙） Pompe à vortex

Also Published As

Publication number Publication date
EP1595078A1 (fr) 2005-11-16
EP1595078B1 (fr) 2011-04-06
US7442016B2 (en) 2008-10-28
ATE504742T1 (de) 2011-04-15
US20060051225A1 (en) 2006-03-09
DE602004032108D1 (de) 2011-05-19
TWI333026B (en) 2010-11-11
GB0303591D0 (en) 2003-03-19
TW200506211A (en) 2005-02-16

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